Sharpener for knives for band-cutters



Patented Ian. 10, I899.

J. E. CROWLEY. SHARPENER FOR KNIVES FOR BAND CUTTEBS.

(Application filed July 2, 1898.)

(No Model.)

P9 7 1 w W ted line a, Figl 1.

UNITED STATES PATENT rice.

. JEREMIAH E. CROWLEY, or OWEN, ILLINOIS.

SHA RPE blER FOR-KNIVES FOR eaiio-c'u'r l'sas.

SPECIFICATION forming part Of- Letters Patent N0. 6 17,318, dated'January 10, 1899.

1 Application filed July 2, 1898. Serial No. 686,023 (NomodeL) To all whom it may concern: Be it known that I, JEREMIAH E. CROWLEY, a citizen of the United States, residing at 1 Owen, in the county of Winnebago and State .5 of Illinois, have invented certain new and useful Improvements in Sharpeners forKnives for Band-Cutters, of which the following is a specification.

The object of this invention is to provide IO means forsharpening the knives of a band I cutter of threshing-machines while the knives are in operation; and it consists of emeryblocks movable into contact with the knives and heldln grinding position by spring action.

a transverse section of a feeder for threshing- Inachines. Fig. 2 is a vertical section on dot- Fig. 3 is a transverse section on dotted line b, Fig. 1. The feeder-frame is of the usual construction, consisting of the side bars 1, endless -carrier 2,composing the bottom, and a shaft 8, supporting kniv'es 4.

Tothe side bars of the feeder-frame are se- 2 5 cured uprights 5 and 6, and horizontal bars 7 connect the uprights. Between the horizonltal bars are located a series of standards 8,

having a pivotal connection therewith upon 1'- the bolts 9 and adj ustablein the lengthwise 530 direction of the horizontal l ars by the slots 10. To the lower end of these standards are secured wooden blocks 11, ha vingtheir lower ends pointed. These stai dards support emery-blocks 12 by the bolts 13, and ashield f3 5 14, protecting one corner of t e blocks, is held in position by the same bolts}- To the upper end of the standards are pivoted brackets 15, which support a bar 16 by the bolts 17, passing throughfslots 18 in the bars. A hand- 4o lever 19 has a pivotal connection with the horizontal bars 7, and also with the bar 16.

A link 20 is supported by the hand-lever,

' adapted to pass over the upright 5 and engage the notch 21. A coiled spring 22 forms a connection between the bar 16 and the uprightdi.

' The emery-blocks are so located with rela tion to the knives that when the partsare in the position shown at Fig. 1 the action of the spring will hold the emery-block against the knives, and when the knives are revolved they will pass in contact with the emeryblocks, which will impart a cutting edge to the knives. The frame supporting the emery 1 blocks forms a part of the feeder-frame, and

by means of the slots 23 in the uprights it can be adjusted to bring the knives the proper distance above the knife-driving shaft 3, and

by means of the slots 10 and 18 each emeryblock can be adjusted so that its face can be brought in contact with the knife, and when the link 20 engages theupright'd the emer blocks'will be held free 'of the knives against the action of the spring 22. After one face of the emery-blocks has been wornthe block i may be reversed, thereby presenting a new face, and the shield 14 serves to assist the position.

I claim as my invention- 1. In a band-cutter for threshing-machines, the combination of a rotatable shaft, aseries bolts in holdingthe emery-blocksin working I .of cutters secured thereto, a support located over the cutters, blocks of grinding material pivotally connected to the support, a bar con- 7 5' necting the upper ends of the blocks-and a handle for moving the bar. 1

2. In a band-cutter for threshing-machines, thecombinationof a rotatable shaft, a series of cutters secured thereto, a' support located over the cutters, blocks of grinding material pivotally connected to the support, a bar con= nectingthe upper ends of the supports and a handle for moving the bar, the blocks being. I

capable of adjustment in connection with the 8; support and bar.

JEREMIAH E. CROWLEY.

\Vitnesses: I

E. BEEEL, A. 0. BEHEL. 

